It's not just blackouts: other delays that have affected sporting events

Fans, players and coaches were forced to endure the high-pitched ringing of the substitution horn for much longer than is normal at a 2003 Seattle SuperSonics game. Late in the third quarter, the horn turned on during a stoppage in play and did not turn off, forcing a 15-minute delay.

The malfunctioning horn was disabled when team officials turned off the scoreboard above center court. It took technicians another 10 minutes to work on the problem. (It's No. 3 on the top 10 video attached to the story).